Emulation and achivement system.

[Runo]

the emulator will probably emulate the psn connection too

That's the part i don't get. Is more than a emulated PSN connection; must be a real server that can host several users if you want to achieve the on-line trophies. Maybe a space to use Hamachi, Garena or something like that, i don't know.

^ That

I also can't see how Hamachi or similar could be used. The server must behave and authenticate the account like the real PSN.
All I could think off, and it would probably still need PS3 code cracking, is pirate PSN servers. Which I really don't know if can be done. My guess is no, really. Aaand I don't know if that's legal.
Just accept it people, emulators are meant to work offline. Using offline features only. Of course this could change in the coming years but I somehow doubt that will happen.